\begin{answer}{makematrixfrombunchofvectors}
Assuming the vectors are all of the same size, you can use
\verb+cbind()+ to bind the vectors as columns
or
\verb+rbind()+
to bind the vectors as rows.

If you get this question, you probably mentioned R \citep{RCoreTeam} on your CV, and the interviewer is testing to see whether you actually use it, or it was just CV fluff.
Be prepared for similar questions about all the languages you mention on your CV.
\end{answer}
